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Macintosh II, Logic Board 820-0163-03 630-0140 SIM SIMM Memory Slot Connecter Replacements?
Posted by: MAC007 on 2025-05-16 10:44:48
Hi all, this is my first post. I just joined. 🙂

I am looking to replace the SIM SIMM Memory slots connectors on this 820-0163-03 Logic Board. Someone broke them 🙁 and I really want to restore this Logic Board instead of turning it into a donor.

I found this site and I think this is what I need.


Can anyone confirm for me or recommend where to get replacement slots/connectors.

Pictures attached are the Logic Board I will be restoring. I hope I can source new slots/connectors rather them pulling them from another Logic Board.
Posted by: ObeyDaleks on 2025-05-16 16:31:48
Those should work. I used them on a different mac (LCII?) and they were a perfect replacement. I believe all Macs, including the Mac II, have the same spacing on their dual 30 pin slots. PE is probably the best vendor for these parts.
Posted by: zigzagjoe on 2025-05-17 08:59:54
Keep in mind those are angled connectors so you would need to replace all simm slots. Also, verify the spacing between rows is correct. There are dual slot sockets out there which have different spacing from what the Macs used.
Posted by: ObeyDaleks on 2025-05-17 11:10:03
Honestly, even if for some reason the spacing is wrong, I would just cut them apart. The single slots from PE are much more expensive.
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